16 GB of ram but only 8 usable? 8 Hardware reserved - CPUs, Motherboards, and Memory - Linus Tech Tips
![G.Skill Ripjaws X Series 16 GB (2 x 8 GB) 240-Pin SDRAM (PC3-12800) DDR3 1600 CL10-10-10-30 1.50V Dual Channel Desktop Memory Model F3-12800CL10D-16GBXL at Amazon.com G.Skill Ripjaws X Series 16 GB (2 x 8 GB) 240-Pin SDRAM (PC3-12800) DDR3 1600 CL10-10-10-30 1.50V Dual Channel Desktop Memory Model F3-12800CL10D-16GBXL at Amazon.com](https://m.media-amazon.com/images/I/91nVm93y-fL._AC_UF894,1000_QL80_.jpg)
G.Skill Ripjaws X Series 16 GB (2 x 8 GB) 240-Pin SDRAM (PC3-12800) DDR3 1600 CL10-10-10-30 1.50V Dual Channel Desktop Memory Model F3-12800CL10D-16GBXL at Amazon.com
![Amazon.com: RAM Mounts RAM Ball W/ 3/8-16 Thread Post Ball Adapter with 3/8 "-16, RAM-B-236-SEC1U (Ball Adapter with 3/8-16 Threaded Post, 23 g) : Electronics Amazon.com: RAM Mounts RAM Ball W/ 3/8-16 Thread Post Ball Adapter with 3/8 "-16, RAM-B-236-SEC1U (Ball Adapter with 3/8-16 Threaded Post, 23 g) : Electronics](https://m.media-amazon.com/images/I/410DjoJbHbL._AC_UF894,1000_QL80_.jpg)